Using Lazarus with FPC 2.2.0 instead of 2.2.1

[djogon]

I have found several importan issues with threading and FPC 2.2.1 on Windows, submitted bug report and samples.

Meanwhile - I rolled back my FPC on Windows to 2.2.0 and everything works great.

Now I want to roll back my FPC on OSX as well to 2.2.0

On windows I HAD TO use the Lazarus snapshots bundle for lazarus and FPC. I could not separately download and use FPC2.2.0 for some reason.

Now on OS X if I download the stable FPC 2.2.0 with sources, put them in the proper, default places, then install the latest Lazarus, I cannot compile any project. The error is
"Can't find using Iterfaces used by Project ..."

On windows I remember that I got similar error with wrong signatures and inability to recompile it.

How do I "plug" Lazarus on OS X to the FPC 2.2.0?

[felipemdc]

If you change your compile version you need to recompile LCL. There is a Configure Build Lazarus dialog on the IDE

[djogon]

The main issue was that the CARBON interfaces were not compiled by default if one uses the SVN version of the lazarus sources so Carbon LCL must be built firs before any other carbon based projects can be compiled.

Hopefully this will save someone else some time.